sometimes they'll use the law to their advantage, but they're entitled to. a legal system needs to be predictable. maybe the tax regime we've been left with does provide opportunities for people to minimize their tax. >> we've been pretty harsh on the uk government in this interview, but what about us compared with the rest of the world. is it that much more onerous or complicated than elsewhere where senior individuals at big companies can go and do business? >> the uk tax system is now said to be the longest in the world. you can't see that that makes it easy to comply with rules. they've tried to make it a complicated system, bringing down corporate tax rates, introducing the patent box to reduce profits for companies making investments in essentially high-tech issues over here. yesterday can strip away a lot of the rules. indeed, they are proposing to introduce a general anti-avoidance rule in this country, which gives them an opportunity, if that works, as it is intended. but very importantly, doesn't put off businesses doing here an opportunity to stri